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Appearances

Magnus and Samirah first encounter Gjalp and her sister Griep in Geirrod's palace, where they went to retrieve Thor's hammer Mjolnir. Magnus and Sam quickly claim guest rights to prevent the two giantesses from killing them directly, although the daughters of Geirrod still attempt to kill them in more subtle ways, such as trying to raise the chair Magnus and Sam are on into the ceiling so that they will get crushed to death. Afterwards, the twin giantesses try to barter for Jack in exchange for Thor's Staff. Magnus refuses and throws Jack into Griep and Gjalp's nasal cavities which scrambles their brains and kills them altogether.